Lets say that i have this table in mariadb:
Table1:
Col1 | Col2 | Col3 |
---|---|---|
Test1 | Done | 01-08-2021 |
Test2 | Done | 01-08-2021 |
Test3 | Waiting | 02-08-2021 |
Test4 | Done | 01-08-2021 |
Test5 | Fail | 01-08-2021 |
Test6 | Done with errors | 01-08-2021 |
Test7 | Finished | 03-09-2021 |
Test8 | Failed with many errors | 10-08-2021 |
Test9 | Not tested yet | 10-10-2021 |
How can i make an sql query so i can have an output like this:
Table2
Col1 | Col2 |
---|---|
Finished | 5 |
Waiting to be finished | 2 |
Failed | 2 |
So baically, what i want is to count the numbers of rows in Table1 which contain: Done, Done with errows or Finshed and to write that number in row Finished in Table2. For the rows in Table1 that contain: Fail and Failed with many errors to be written to row Failed in Table2. For the rows in Table1 that contain Waiting and Not tested yet to be written to row Waiting to be finished in Table2.
You may aggregate using a CASE
expression:
SELECT
CASE WHEN Col2 IN ('Done', 'Done with errors', 'Finished') THEN 'Finished'
WHEN Col2 LIKE '%fail%' OR Col2 LIKE '%Fail%' THEN 'Failed'
WHEN Col2 IN ('Waiting', 'Not tested yet') THEN 'Waiting to be finished'
END AS Col1,
COUNT(*) AS Col2
FROM Table1
GROUP BY 1;
SELECT statuses.col1, COUNT(*)
FROM source_table
JOIN ( SELECT 'Finished' col1, 'Done' col2 UNION ALL
SELECT 'Finished', 'Done with errors' UNION ALL
SELECT 'Finished', 'Finished' UNION ALL
SELECT 'Failed', 'Fail' UNION ALL
SELECT 'Failed', 'Failed with many errors' UNION ALL
SELECT 'Waiting to be finished', 'Waiting' UNION ALL
SELECT 'Waiting to be finished', 'Not tested yet' ) statuses USING (col2)
GROUP BY statuses.col1;
The best way - create static table statuses
with shown data and use it instead of dynamic subquery.
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